If a patient is unresponsive, not breathing or only gasping, they may be in cardiac arrest.

1. Call 911 first
2. Connect the device to the phone using the AED’s attached USB cable.

3. The Defibrio app should open automatically on your smartphone. If it doesn’t, tap the Defibrio heart icon to open it:
   
   Tap “Emergency” in the app and follow the instructions it provides.
   
   1. Remove all clothing covering the chest area. Then apply the pads as shown in the Defibrio app.
   2. The app will check the patient’s heart rhythm. If instructed, press the button to give a shock when the app is ready. Make sure no one is touching the patient, the AED, or the smartphone during analysis and shock delivery.
   3. Perform CPR. After about two minutes, the app will check the patient’s heart rhythm again and may instruct you to deliver additional shocks.

See the “Setting up the Defibrio AED and app” section of this manual for complete instructions.